I was reading an article about P-51's in the Pacific.... and the author was talking about '... the greatest invention of the War.'

It was a navigation system for over the long expanses of water encountered in the Pacifc....

... and it was referred to 'Uncle-Dog'....


.... what was it, and how did it work?

-whatever

-Lou

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5 out of 4 people have difficulty with fractions.